Helmet



FIG. 1 is a front perspective view of a helmet showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a rear perspective view thereof; and,

FIG. 7 is a top plan view thereof.

All interior structure (visible through the openings of the helmet) is not claimed.

The portions shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a helmet, as shown and described. 